PLANT Coors In Maize 101 
tion from a 3:1 ratio is 3.25 + 2.99. From their behavior and in view 
of the crosses in which they occurred, one of these plants is assumed to 
have been A Abb Plplr'r’ and the other A Abb PlplR R’. 
A single dilute purple of an F; lot equivalent to an F2 gave dilute purple 
and green plants only (group 3, table 43). The two color types appeared 
in the ratio 62:16, a deviation from 3:1 of 3.5 + 2.6. The F; plant is 
therefore assumed to have been AAbUb PI PIR’r’. Colorless and 
mottled seeds produced dilute purple plants only, as was expected. From 
self-colored seeds there resulted dilute purple and green plants in the 
relation 26:16, a deviation of 2.0 + 2.0 from the expected 2:1 ratio. 
Two dilute sun red plants gave progenies of dilute sun reds and greens 
in the relation 63:22, a deviation from a 3:1 ratio of 0.75 + 2.69 (group 
4, table 43). Presumably these plants were AAbbplplkR’r’ and 
AAbbpl pl R’R*. Four other dilute sun red plants bred true in the 
next generation (group 5, table 43), producing a total of 197 dilute sun 
red plants. These plants are therefore assigned the genotype A A bb pl 
pb’ x. 
Seven green plants likewise bred true (group 6, table 43), producing a 
total of 130 green plants. These plants were presumably A 6 pl R’ and 
AND UPL Res 
To summarize, all types of behavior were observed in F; and equivalent 
F, generations of the cross of dilute purple with green IVg except true- 
breeding dilute purples. Only eight dilute purples were tested, and only 
one in nine is expected to breed true. 
Sun red ITg and IIa and dilute sun red IVa x green IIIg and IVg.— Two 
crosses of green-anthered sun red with green IVg gave green-anthered 
sun red plants in F;, theoretically A ABbpl pl R’ R’. The parent 
types only appeared in F2 (table 44, group 1). The observed numbers 
of green-anthered sun reds and greens were, respectively, 216 and 77. 
The deviation from the expected 3:1 ratio was 3.7 5+ 5.00. 
A cross of pink-anthered sun red with green IVg gave pink-anthered 
sun red in Fj, theoretically A A Bbplpl R’r’. Fy; plants backcrossed 
with green IVg, A 6 pl R’, gave three major plant-color types (group 2, 
table 44) — sun red, dilute sun red, and green — with the sun reds appear- 
ing in two subtypes, one pink-anthered and the other green-anthered. 
Theoretically the four types should have been represented by an equal 
number of individuals. The deviations from this expectation were such 
